Three cylindrical rollers of equal length and material are arranged as shown in end view below. Cylinders 2a and 2B have radius r and cylinder 1 has radius 4r. Their axes are parallel to each other and to that of the fixed concave cylindrical surface, of radius 6r, that supports them. They roll without slip. Assuming no damping and following the steps below, determine the frequency of small free rolling oscillations. (a) For rotation 6, of the cylinder 1, determine the resulting rotation of the lower Mlin

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
icon
Related questions
Question
Three cylindrical rollers of equal length and material are arranged as shown in end view
below. Cylinders 2A and 2B have radiusr and cylinder 1 has radius 4r. Their axes are parallel
to each other and to that of the fixed concave cylindrical surface, of radius 6r, that supports
them. They roll without slip. Assuming no damping and following the steps below,
determine the frequency of small free rolling oscillations.
(a)
For rotation 6, of the cylinder 1, determine the resulting rotation of the lower
cylinders. [Hint: Does it look like an epicyclic gear train?]
When the upper roller rotates with velocity 6, determine the translational and
rotational velocities of the centre of mass of the lower rollers. [Hint: In an epicyclic
gear train the centres of these would be supported on the planet carrier.]
(b)
(c)
Write an expression for the kinetic energy of the whole system at
some instant during the oscillation when the rotational velocity of cylinder 1 is , .
(d)
Write an expression for the gravitational potential energy of the system when the
cylinder 1 has rotated through angle 0, from its equilibrium position. Use the
equilibrium position as the potential energy datum.
(e)
Assuming no damping, apply the principle of conservation of energy to the system
to derive the governing differential equation of motion. [Energy]=0
(f)
By assuming small oscillation amplitude, linearise the differential equation
obtained in part (e). Then determine the natural frequency of oscillation of the
oscillating motion.
Transcribed Image Text:Three cylindrical rollers of equal length and material are arranged as shown in end view below. Cylinders 2A and 2B have radiusr and cylinder 1 has radius 4r. Their axes are parallel to each other and to that of the fixed concave cylindrical surface, of radius 6r, that supports them. They roll without slip. Assuming no damping and following the steps below, determine the frequency of small free rolling oscillations. (a) For rotation 6, of the cylinder 1, determine the resulting rotation of the lower cylinders. [Hint: Does it look like an epicyclic gear train?] When the upper roller rotates with velocity 6, determine the translational and rotational velocities of the centre of mass of the lower rollers. [Hint: In an epicyclic gear train the centres of these would be supported on the planet carrier.] (b) (c) Write an expression for the kinetic energy of the whole system at some instant during the oscillation when the rotational velocity of cylinder 1 is , . (d) Write an expression for the gravitational potential energy of the system when the cylinder 1 has rotated through angle 0, from its equilibrium position. Use the equilibrium position as the potential energy datum. (e) Assuming no damping, apply the principle of conservation of energy to the system to derive the governing differential equation of motion. [Energy]=0 (f) By assuming small oscillation amplitude, linearise the differential equation obtained in part (e). Then determine the natural frequency of oscillation of the oscillating motion.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps

Blurred answer
Knowledge Booster
Free Undamped Vibrations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY